[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.245' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.569639] kasan: CONFIG_KASAN_INLINE enabled [ 31.574363] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.581882] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 31.588096] Modules linked in: [ 31.591266] CPU: 0 PID: 7974 Comm: syz-executor184 Not tainted 4.14.261-syzkaller #0 [ 31.599116] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.608442] task: ffff8880974442c0 task.stack: ffff8880964a8000 [ 31.614476] RIP: 0010:rds_ib_get_mr+0x58/0x200 [ 31.619027] RSP: 0018:ffff8880964afb98 EFLAGS: 00010202 [ 31.624359] RAX: dffffc0000000000 RBX: ffff8880964afc68 RCX: ffff88809761351c [ 31.631600] RDX: 000000000000000d RSI: 0000000000000001 RDI: 0000000000000068 [ 31.638841] RBP: ffff888094ab33c0 R08: 0000000000000001 R09: ffff8880b4997c00 [ 31.646084] R10: ffff8880b4997c27 R11: 0000000000000000 R12: ffff8880b4997c00 [ 31.653326] R13: 0000000000000001 R14: ffff88809761351c R15: 0000000000000000 [ 31.660568] FS: 00007fed299a4700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 31.668766] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.674620] CR2: 00007fed299a4718 CR3: 00000000ab302000 CR4: 00000000003406f0 [ 31.681866] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.689107] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.696349] Call Trace: [ 31.698913] __rds_rdma_map+0x5ab/0xea0 [ 31.702864] rds_get_mr_for_dest+0xe3/0x130 [ 31.707156] ? rds_get_mr+0xd0/0xd0 [ 31.710757] ? __lock_acquire+0x5fc/0x3f20 [ 31.714966] rds_setsockopt+0x337/0x750 [ 31.718910] ? rds_create+0x4b0/0x4b0 [ 31.722687] ? __fdget+0x19b/0x1f0 [ 31.726209] ? security_socket_setsockopt+0x83/0xb0 [ 31.731197] SyS_setsockopt+0x110/0x1e0 [ 31.735144] ? SyS_recv+0x40/0x40 [ 31.738568] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.743556] ? do_syscall_64+0x4c/0x640 [ 31.747502] ? SyS_recv+0x40/0x40 [ 31.750928] do_syscall_64+0x1d5/0x640 [ 31.754793] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.759952] RIP: 0033:0x7fed29a12d09 [ 31.763634] RSP: 002b:00007fed299a4318 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 31.771311] RAX: ffffffffffffffda RBX: 00007fed29a9b3f8 RCX: 00007fed29a12d09 [ 31.778549] RDX: 0000000000000007 RSI: 0000000000000114 RDI: 0000000000000003 [ 31.785794] RBP: 00007fed29a9b3f0 R08: 00000000000000a0 R09: 0000000000000000 [ 31.793037] R10: 0000000020000140 R11: 0000000000000246 R12: 00007fed29a9b3fc [ 31.800282] R13: 00007fff1837a58f R14: 00007fed299a4400 R15: 0000000000022000 [ 31.808307] Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 9e 01 00 00 4c 8b bd c0 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7f 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6e 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d [ 31.827366] RIP: rds_ib_get_mr+0x58/0x200 RSP: ffff8880964afb98 [ 31.833772] ---[ end trace 1dcc0a50232ae05d ]--- [ 31.838634] Kernel panic - not syncing: Fatal exception [ 31.844217] Kernel Offset: disabled [ 31.847821] Rebooting in 86400 seconds..